Title :
Complete mathematical analysis of ripple current as a function of the modulation index for direct indirect and bus clamped space vector modulation techniques [motor drives]
Author_Institution :
Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Abstract :
A detailed mathematical analysis was performed to estimate the current ripple as a function of modulation index for direct indirect and bus clamped methods of space vector modulation. The results, both experimental and simulated, show that for a modulation index above 0.45 the direct-indirect method progressively gives lesser current ripple and becomes almost half at around a modulation index of 1. For an intelligent drive, with the optimizing criterion as current ripple, this helps in dynamically switching between bus clamped and direct-indirect methods
Keywords :
control system analysis; electric current control; intelligent control; machine control; machine theory; modulation; motor drives; optimal control; bus-clamped space vector modulation; direct-indirect space vector modulation; dynamically switching; intelligent motor drives; mathematical analysis; modulation index; ripple current optimisation; Artificial intelligence; Equations; HDTV; Mathematical analysis; Modulation; State estimation; Stators; Switches; Vectors; Voltage;
Conference_Titel :
Electric Machines and Drives Conference Record, 1997. IEEE International
Conference_Location :
Milwaukee, WI
Print_ISBN :
0-7803-3946-0
DOI :
10.1109/IEMDC.1997.604259
